From: Matt Turner <mattst88@gmail.com>
Date: Sat, 22 Nov 2014 02:05:40 +0000 (-0800)
Subject: i965: Initialize INTEL_DEBUG once per process.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=933c67877678704c2d1a11b46c2703a3f04178ce;p=mesa.git

i965: Initialize INTEL_DEBUG once per process.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
---

diff --git a/src/mesa/drivers/dri/i965/intel_debug.c b/src/mesa/drivers/dri/i965/intel_debug.c
index a283357bcf1..6391cf74ab6 100644
--- a/src/mesa/drivers/dri/i965/intel_debug.c
+++ b/src/mesa/drivers/dri/i965/intel_debug.c
@@ -32,6 +32,7 @@
 #include "brw_context.h"
 #include "intel_debug.h"
 #include "utils.h"
+#include "util/u_atomic.h" /* for p_atomic_cmpxchg */
 
 uint64_t INTEL_DEBUG = 0;
 
@@ -73,7 +74,9 @@ static const struct dri_debug_control debug_control[] = {
 void
 brw_process_intel_debug_variable(struct brw_context *brw)
 {
-   INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
+   uint64_t intel_debug = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
+   (void) p_atomic_cmpxchg(&INTEL_DEBUG, 0, intel_debug);
+
    if (INTEL_DEBUG & DEBUG_BUFMGR)
       dri_bufmgr_set_debug(brw->bufmgr, true);